GridinSoft Threat Intelligence
grubx64_real.efi threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Trojan.ExtHeur!. Download GridinSoft Anti-Malware to scan the device, confirm whether this file is present, and remove the detected object if it is found.
- Detection name
- Trojan.ExtHeur!
- Recommended action
- Scan and remove
- Last analysis
- 2026-05-13 23:00:43 (2 weeks ago)
- File hash
- c3945f389fb077d5bab1c52f121fbe0f
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Trojan.ExtHeur!, part of the Trojan threat category.
Malware disguised as legitimate software or delivered through deceptive packaging. Related Trojan reports help compare this file with nearby detections, publishers, and hashes.
First seen 2026-05-13 23:00:43 (2 weeks ago); latest analysis 2026-05-13 23:00:43 (2 weeks ago).
ThreatInfo has seen this file in user or system paths listed below. Unexpected locations increase the need for local verification.
Recommended action
What to do next
- Compare the MD5 above with the file found on the device.
- Check whether the file appears in the observed locations or under one of the alternate names.
- Run GridinSoft Anti-Malware to confirm the detection and remove the file if it is present. Review the Trojan category for related samples and common context.
File context
grubx64_real.efi is a Windows file recorded in the ThreatInfo database. The current detection status is Trojan.ExtHeur!, based on the latest analysis from 2026-05-13 23:00:43 (2 weeks ago). ThreatInfo groups this verdict with Trojan reports for broader family-level investigation.
If grubx64_real.efi appears on your computer unexpectedly, treat it as suspicious. Check its location, digital signature, and recent system changes before allowing it to run. A full anti-malware scan is recommended when this file is detected as Trojan.ExtHeur!.
File Details
| MD5: | c3945f389fb077d5bab1c52f121fbe0f |
| Size: | 1 MB |
| First Published: | 2026-05-13 23:00:43 (2 weeks ago) |
| Latest Published: | 2026-05-13 23:00:43 (2 weeks ago) |
| Status: | Trojan.ExtHeur! (on last analysis) | |
| Analysis Date: | 2026-05-13 23:00:43 (2 weeks ago) |
Detection screenshot
The screenshot is a visual record of a GridinSoft Anti-Malware detection for this sample. Use the hash and metadata above as the primary identifiers when comparing the file on your system.
Common Places:
| %sysdrive%\efi |
ThreatInfo has observed grubx64_real.efi in the locations listed above. Files found in temporary folders, user profile folders, startup locations, or unusual application directories should be reviewed more carefully than files installed under a known program directory.
Geographic signal
Observed country distribution
ThreatInfo has seen grubx64_real.efi across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Brazil with 100.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
The most common operating system signal for grubx64_real.efi is Windows 10 with 100.0% of observed hits. If your system differs from the common profile, check whether the file was introduced by a specific installer, archive, or removable device.
Analysis
grubx64_real.efi is identified as pe for 64-bit systems. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
e85ba720299c5667fb3eb2c9f46d808b
e449cf8950e18feb3716674c4952e654
cf2310377e73d7471668265a4651ef0d
25adc6024d504a2cd5f0099c631ce095
PE section names and hashes can reveal packing, injected resources, or unusual build artifacts. Sections with uncommon names, very large raw data, or hashes that differ from a trusted copy deserve additional review.
Report conclusion
GridinSoft detects this file as Trojan.ExtHeur!
This report identifies grubx64_real.efi by MD5 c3945f389fb077d5bab1c52f121fbe0f. It is part of the Trojan report group. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.